公开(公告)号：US08374624B2

公开(公告)日：2013-02-12

申请号：US12397799

申请日：2009-03-04

申请人： Jin-Serk Baik ,  Joon-Oo Kim ,  Yun-Je Oh ,  Joong-Soo Ma ,  Myoung-Hwan Seo ,  Myoung-In Ji ,  Sung-Chang Choi

发明人： Jin-Serk Baik ,  Joon-Oo Kim ,  Yun-Je Oh ,  Joong-Soo Ma ,  Myoung-Hwan Seo ,  Myoung-In Ji ,  Sung-Chang Choi

IPC分类号： H04W4/02

CPC分类号： G01S5/0294

摘要： Provided is a location measurement method of a mobile node using a predictive filter is provided for improving the location measurement accuracy of the mobile node. The location measurement method of a mobile node detects change of movement pattern of the mobile node, corrects weights of a location measurement period and a predictive filter depending on the change of movement pattern, and compensates a location of the mobile node using the corrected weights of the location measurement period and predictive filter.

摘要翻译： 提供了一种使用预测滤波器的移动节点的位置测量方法，用于提高移动节点的位置测量精度。 移动节点的位置测量方法检测移动节点的移动模式的变化，根据移动模式的变化校正位置测量周期的权重和预测滤波器，并且使用校正的权重来补偿移动节点的位置 位置测量周期和预测滤波器。

公开(公告)号：US08330648B2

公开(公告)日：2012-12-11

申请号：US12389848

申请日：2009-02-20

申请人： Jeong-Rok Park ,  Jin-Serk Baik ,  Sung-Kweon Park ,  Do-Young Ha ,  Byung-Jik Kim ,  Joon-Oo Kim

发明人： Jeong-Rok Park ,  Jin-Serk Baik ,  Sung-Kweon Park ,  Do-Young Ha ,  Byung-Jik Kim ,  Joon-Oo Kim

IPC分类号： G01S13/58

CPC分类号： G01S13/76 ,  G01S7/2921

摘要： A method and apparatus for measuring a distance in a wireless environment are provided, in which a first device transmits a distance measurement signal to a second device and receives at least one response signal for the distance measurement signal from the second device, matches the received response signal with a reference signal to detect an earliest response signal, and calculates a time taken from the transmission of the distance measurement signal to the second device and the reception of the response signal from the second device using a peak value of the matched reference signal.

摘要翻译： 提供一种用于测量无线环境中的距离的方法和装置，其中第一设备向第二设备发送距离测量信号，并且从第二设备接收距离测量信号的至少一个响应信号，匹配所接收的响应 具有参考信号以检测最早的响应信号，并且使用匹配的参考信号的峰值来计算从距离测量信号发送到第二设备的时间和来自第二设备的响应信号的接收。

公开(公告)号：US20090207070A1

公开(公告)日：2009-08-20

申请号：US12389848

申请日：2009-02-20

申请人： Jeong-Rok PARK ,  Jin-Serk Baik ,  Sung-Kweon Park ,  Do-young Ha ,  Byung-Jik Kim ,  Joon-Oo Kim

发明人： Jeong-Rok PARK ,  Jin-Serk Baik ,  Sung-Kweon Park ,  Do-young Ha ,  Byung-Jik Kim ,  Joon-Oo Kim

IPC分类号： G01S13/08

CPC分类号： G01S13/76 ,  G01S7/2921

摘要： A method and apparatus for measuring a distance in a wireless environment are provided, in which a first device transmits a distance measurement signal to a second device and receives at least one response signal for the distance measurement signal from the second device, matches the received response signal with a reference signal to detect an earliest response signal, and calculates a time taken from the transmission of the distance measurement signal to the second device and the reception of the response signal from the second device using a peak value of the matched reference signal.

摘要翻译： 提供一种用于测量无线环境中的距离的方法和装置，其中第一设备向第二设备发送距离测量信号，并且从第二设备接收距离测量信号的至少一个响应信号，匹配所接收的响应 具有参考信号以检测最早的响应信号，并且使用匹配的参考信号的峰值来计算从距离测量信号发送到第二设备的时间和来自第二设备的响应信号的接收。

公开(公告)号：US08611396B2

公开(公告)日：2013-12-17

申请号：US12795298

申请日：2010-06-07

申请人： Sung-Kweon Park ,  Byung-Jik Kim ,  Jeong-Rok Park ,  Jin-Serk Baik

发明人： Sung-Kweon Park ,  Byung-Jik Kim ,  Jeong-Rok Park ,  Jin-Serk Baik

IPC分类号： H04B1/00

CPC分类号： H04B1/713 ,  H04B1/692 ,  H04B2001/6912

摘要： Disclosed is a frequency hopping modulation method in a communication system. The method includes: generating a frequency hopping pattern according to a hopping frequency's level; generating a hopping frequency through use of the frequency hopping pattern; modulating an original signal to a frequency hopping spread signal by multiplying the original signal by the hopping frequency; generating a chirp pulse code for diversifying the frequency hopping spread signal; and modulating the frequency hopping spread signal to a chirp pulse signal by multiplying the frequency hopping spread signal by the chirp pulse code.

摘要翻译： 公开了一种通信系统中的跳频调制方法。 该方法包括：根据跳频频率产生跳频模式; 通过使用跳频图来产生跳频; 通过将原始信号乘以跳频来将原始信号调制成跳频扩展信号; 产生用于使跳频扩展信号多样化的啁啾脉冲码; 并通过将跳频扩展信号乘以啁啾脉冲码来将跳频扩展信号调制成啁啾脉冲信号。

公开(公告)号：US20080131127A1

公开(公告)日：2008-06-05

申请号：US11575604

申请日：2004-12-22

申请人： Chang-Hee Lee ,  Jin-Serk Baik ,  Ki-Man Choi ,  Hyun-Sik Min ,  Keun-Youl Park

发明人： Chang-Hee Lee ,  Jin-Serk Baik ,  Ki-Man Choi ,  Hyun-Sik Min ,  Keun-Youl Park

IPC分类号： G02B27/28 ,  H01S5/00 ,  H01S3/10 ,  H01S3/13

CPC分类号： H01S5/4006 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/0427 ,  H01S5/0612 ,  H01S5/0656 ,  H01S5/4068

摘要： Disclosed is a broadband light source (BLS) necessary to implement wavelength-locked Fabry-Perot (FP) laser diodes (LDs) applicable to an optical subscriber network The BLS is based on a method using mutual injection of low-cost FP LDs and a method using FP LDs undergoing chirping. A power level of a light emitting diodes (LED), an erbium-doped fiber amplifier (EDFA), or a super luminescent diode (SLD) used as the conventional BLS is low and its cost is high, such that the conventional BLS is inefficient. However, the present invention can easily implement a low-cost BLS using proposed FP LDs.

摘要翻译： 公开了实现适用于光用户网络的波长锁定法布里 - 珀罗（FP）激光二极管（LD）所必需的宽带光源（BLS）.BLS基于使用低成本FP LD的相互注入和 方法使用FP LD进行啁啾。 作为常规BLS使用的发光二极管（LED），掺铒光纤放大器（EDFA）或超发光二极管（SLD）的功率电平低，成本高，从而传统的BLS效率低下 。 然而，本发明可以容易地实现使用提出的FP LD的低成本BLS。

公开(公告)号：US06728026B2

公开(公告)日：2004-04-27

申请号：US09942457

申请日：2001-08-29

申请人： Chang-Hee Lee ,  Byoung Yoon Kim ,  Seok Hyun Yun ,  Hyo Sang Kim ,  Jin-Serk Baik ,  Kun-Youl Park ,  Wayne V. Sorin

发明人： Chang-Hee Lee ,  Byoung Yoon Kim ,  Seok Hyun Yun ,  Hyo Sang Kim ,  Jin-Serk Baik ,  Kun-Youl Park ,  Wayne V. Sorin

IPC分类号： H01S300

CPC分类号： H04B10/2941 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/296 ,  H04B2210/003

摘要： An optical amplifier comprises a wavelength tunable filter, one or more optical gain stages, and a controller for controlling a spectral profile of the wavelength tunable filter in response to a measured spectral characteristic of the amplifier. The controller may also control gain of the gain stage(s). The controller determines the filter spectral profile necessary to obtain a desired amplifier spectral characteristic. The spectral characteristic may, for example, be a power spectral output of the amplifier or a gain profile of the amplifier. The amplifier may incorporate a dispersion compensator. The controller may control a spectral profile of the wavelength tunable filter and gain of the dispersion compensator. A tunable fiber light source is also described.

摘要翻译： 光学放大器包括波长可调滤波器，一个或多个光学增益级和用于响应于所测量的放大器的光谱特性来控制波长可调谐滤波器的光谱分布的控制器。 控制器还可以控制增益级的增益。 控制器确定获得所需放大器频谱特性所需的滤波器频谱分布。 频谱特性可以例如是放大器的功率谱输出或放大器的增益曲线。 放大器可以并入色散补偿器。 控制器可以控制波长可调滤波器的谱分布和色散补偿器的增益。 还描述了可调光纤光源。

公开(公告)号：US20100309953A1

公开(公告)日：2010-12-09

申请号：US12795298

申请日：2010-06-07

申请人： Sung-Kweon PARK ,  Byung-Jik Kim ,  Jeong-Rok Park ,  Jin-Serk Baik

发明人： Sung-Kweon PARK ,  Byung-Jik Kim ,  Jeong-Rok Park ,  Jin-Serk Baik

IPC分类号： H04B1/00

CPC分类号： H04B1/713 ,  H04B1/692 ,  H04B2001/6912

摘要： Disclosed is a frequency hopping modulation method in a communication system. The method includes: generating a frequency hopping pattern according to a hopping frequency's level; generating a hopping frequency through use of the frequency hopping pattern; modulating an original signal to a frequency hopping spread signal by multiplying the original signal by the hopping frequency; generating a chirp pulse code for diversifying the frequency hopping spread signal; and modulating the frequency hopping spread signal to a chirp pulse signal by multiplying the frequency hopping spread signal by the chirp pulse code.

摘要翻译： 公开了一种通信系统中的跳频调制方法。 该方法包括：根据跳频频率产生跳频模式; 通过使用跳频图来产生跳频; 通过将原始信号乘以跳频来将原始信号调制成跳频扩展信号; 产生用于使跳频扩展信号多样化的啁啾脉冲码; 并通过将跳频扩展信号乘以啁啾脉冲码来将跳频扩展信号调制成啁啾脉冲信号。